Type-operating mechanism for type-writing machines.



0. BENNETT.

TYPE OPERATING MECHANISM FOR TYPE WRITING MACHINES. APPLICATION FILEDJAN. 18, 1915.

hma m ai; Patented 1251,18, 1916 2 SH-EETS-SHEET 1.

ITNESSES. 2?

0. BENNETK. TYPE OPERAUNG MECHANISM FOR TYPE WRITING MACHINES.

\ APPLICATION FILED IAN.18, 1915. 1,1630% Patented J an. 18, 1916.

{SHEETS-SHEET 2.

WITNESSES tinirnn snares rarnNr enrich.

oniN BENNETT, or PLACERVILLE, CALIFORNIA.

' TYPE-OPERATING MECHANISM non TYPE-WRITING- MACHINES.

Application filed January 18, 1915.

Z '0 all 107mm it may concern Be it known that I, ORIN BENNETT, acitizen of the United States, residing at Placerville, in the county ofEldorado, State of California, have invented certain new and usefulImprovements in Type-Operat ing lvlechanism for Type-\Vriting Machines;and I do declare the following to be a clear,

full, and exact description of the same, suchas will enable othersskilled in the art to which 1t appertams to make and use the same,reference being had to the accompanying drawings, and to the charactersof referaccurate and uniform manner, thus enabling the best work to bedone upon the type writing machine with very little effort on the partof the operator.

The device is also designed for use not only on regular small typemachines, but

can be adapted for use on large type machines for writing newspapers,bulletins, placards, or other similar large type matter. The sameprinciple of invention is disclosed in my pending application forpatent,filed August 21st, 1914, Ser. No. 857,841, and the present applicationmerely relates to improved details of construction and operation inconnection with the same.

A further object of the invention is to produce a simple and inexpensivedevice and yet one which will be exceedingly efiective for the purposesfor which it is designed.

These objects, 'I accomplish by means of vsuch structure and relativearrangement of the parts as will fully appear by a perusal of thefollowing specification and claims.

On the drawings, similar characters of reference indicate correspondingparts in the several views.

1 Figure 1 is a cross sectional view of a machine showing my improvedstructure thereon. Fig. 2 is a top plan view of the Specification ofLetters Patent.

racemes an. is, rare.

Serial No. 2,840 l same showing but one of the operating keys and itsconnection with the balance of the mechanism. I have not shown thebalance of the keys as it would only confuse the illustration, but itwill be understood that each key is applied and operated the same aswill be described for this onekey. Fig. 3 is a detached detailed view ofthe operating key. Fig. 4 is a fragmentary side ele-, ration of a typecarriage centering mechanism. Fig. 5 is a sectional view of the sametaken on. a line XX of Fig. 4. Fig. 6 is a top plan view of thetype'operating hammer. Fig. 7 is a side elevation of the upper portionof the type operating hammer.

Referring now more particularly to the characters of reference onthedrawingsflhe numeral 1 designates the frame of the machine which maybe of any suitable structure and mounted on which is the usual typecarriage 2 carrying the platen 3. This carriage is operated in anysuitable manner, hence I have merely outlined the same in the drawingand make no particular claim to the means of operating the same, nor ofthe ribbon mechanism or other details of the machine, my invention beingconfined solely to the type operating mechanism.

In carrying out the construction of my improved invention, the sameembodies certain subdivisions of construction and operation, namely: thetype rack; the type rack operating and controlling mechanism; the keycontrolling mechanism for the type rack and type bar mechanism; theelectrically operated hammer mechanism for operating the type bars; andlastly, the keys and connections for throwing the electricallycontrolled structure i'*to operation.

Describing first the type rack, this is of a rotary type and consists ofa vertical shaft & suitably journaled in a supporting frame 5 andprovided with two spacel arms 6 and'7. On the arm 6 is an annular ring 8and on the arm 7 is an annular ring 9. The type bars 10 are each securedto resilient strips which are secured in the ring 8 and normally restagainst the ring 7 These type bars ld-carry the type 11 which projectadjacent the platen 3.

Describing next the type rack operating mechanism, the numeral 12designates a pinion disposed on the shaft 4: and meshing with thispinion 1 is a geared quadrant 13 secured to the shaft 14 suitablyjournaled in aframe 15 at itsupper end and in a frame} 16 at its lowerend. With the movement of the shaft-14, the rack 13 will likewise'be.

moved, which in turn will moye the pinion 12 and incidentally the shaft4 and turn the the key. 17 isffirst depressed,'but causing the 1membersf18 arid-1 9 to .move as a unit on the fulcrum 'poirity 21untilcertain conditions type rack to turn .one or the'other of the ablymounted on ashaft 21 securedi n the frame 1. The lever 18 has a portion18 projecting beyond the pivotalpoint 20 and connected. wi ha spring 22.which normally is of sufiicient tension to prevent-the portion 18 frommoving on its pivotal point 20 when arise, as will appear. Each member19 is provided'with an inclined cam 23 terminating in a, lug-24 to forman ntermediate slot 25,. projecting into i which slot, through the lug24, .isa set screw 26.-- With the downward movement of the'members 18and 19 as ,a un it,'the cam 23 comes into'contact with a finger member27 securedron a shaft 28. The

engagement of the fingertmember 27 with theinclined cam 23 moves" suchmember 27 along the surfaceof said cam and turns the shaft. 28,- whichaction likewise turns. an

. I arm29. secured on said shaft 28. The movement of this arm 29'operates a rod 30 coninected by a ball and socket joint 31 with an arm32 securedt mthe shaft 14 so that through the movement of the key 17,the said shaft 14 will be moved to turn the type rack to bring that typewhich corresponds to the operated key adjacent the platen 3. The

movement of the, type rack must therefore be controlled sothat fordifferent keys 'a- ,difierent amount of movement will be had to hung adifferent type adjacentsuch platen 3.

l as

This adjustment of movement is occasioned by adj usting, the degree ofmovement of the finger member 27 along the inclinedcam 23 and is fixedby means of a double structure consisting first of the adjustment setscrew 26 which can be set at different points in i the slot25 andsecondly, by having thefinger member 27 consistingof two, parts', oneslightly resflient and-the other, as at 27,

"rigid. The portion 27 would then be'fixed at the lower end of theportion 27. by'means of a'screw. 27 and then through the upper end ofthe member 27 I would provide a set screw 27 bearing against the member27 to .fix it at different "relative positions" to in;

crease or decrease its amount oftravel over the inclmed cam 23.- Bymeans of these ad .-justments, each key could have a different degree ofmovement in connection with its corresponding finger member 27 to impartto the shaft 28 a difierent degreeof move ment,fwhich,-transmittedthrough the mechanism described, would I operate the type ,rack in themanner set forth. The. type bars 10 are secured on the type rack in acircular manner'as set forth and in such a Way as to leave a blankspace33 normally adjacent the platen This normal position is maintained meansof two spaced spiral springs 34 and 35 secure'don the shaft 14 and eachprovided. with an arm 36. and 37, respectively, projecting obliquely inspaced relation and normally engaging a stop member 38, in whichposition the type rack will be solocked'that the blank space 33 will beadjacent the platen 3. When the type rack is operated in one'directionor the other, the corresponding arm. 36 or 37' will move awayfrom thestop'- member 38. Then when the key 17 is released and pulled backto.normal position by the spring 22 in a manner as will.

be'hereinafter described, the spring 34 or 35 willthrow the said armbackuntil it strikesthe stop member 38 to reset the type rack its normalposition. In this normal posi tion, it is locked by means of a springpressed dog locked in the stop member 38 and'engagmg a notch 40 in acurved plate 41 secured on an arm '42, which arm is connected with theshaft 14. In view of this locked position,

it will be noted that it'becomes, necessary to release the dog39 fromthe notch 40 before the shaft 14 can move at all, and this is ac.-

complishedas follows, namely. There is a slight space 43 between thenormal positions of the cam23 and the finger member 27 and while the keylever 18 19 is moving through this slight space, it carries a. fingermember 44-aga1nst a cross bar 45, pivoted .on the shaft21, as at 46, andlifts said bar 45 up wardly.- This movement likewise lifts a fingermember 47 secured on the bar 45, which m 11 finger member engagesaninclined surface '48 on apivoted arm 49 to which is connected 7 thespring pressed dog 39. This engagement moves the arm '49 backwardagainst the spring 50 and disengages the dog 39 from the notch 40leaving the shaft 14' free to turn.

'When the type rack has turned and brought the appropriate key adjacentthe I platen 3, it becomes essential that it be held rigidly in thatposition in order to obtain the best possible operation of thegtypebarand this rigidity. is occasioned as follows:

By this time the finger member 27 has come to a stop against theadjustment screw 26 so thatno further movement of the part 19 can be hadon. the fulcrum point 21 sothe' tension of the spring 22 is. overcomeand the member.1 8 18 moves; on itsfulcrum point 20; This brings the endof theunems er 18. in ofo a kw hi was a:-.- n

cured on a curved arm 53 connected with.

a spring controlled shaft 54. The shaft 54 is provided with a beveledgear 55 which in turn meshes with a beveled quadrant 56 on a verticalshaft 57. This shaft 57 is provided with an arm 58 having bent at rightangles thereto a finger member 59, which, with the turning movement ofthe shaft 57, will be brought into engagement with one of a seriesof'notches on the ring 8. Thus, through the medium of the structure justdescribed, when the type rack has moved to acertain position, the fingermember 59 will immediately drop into engagement with one of the notches60 to hold the type rack rigid while the type is driven. into contactwith the platerrB. lVhen the mechanism is released, a spring 61 returnsthe shaft 54: and its connected parts to normal active position. Thetype rack having been turned to the position described and lockedthereon in the manner specified, the next mechanism to be called intoaction is the electrically controlled hammer mechanism for driving thetype against the platen 3: This consists of an enlarged hammer head 62having a reducedportion 63. movable between guides 64 on a suitableframe 65 disposed within the contourof the type rack. Said reducedportion 63 then bends downwardly and is fulcrumed, as at 66, to the saidframe 65. On the lower end of this hammer is provided a small fiber orrubber bumper 67. The numeral 68 designates the operating lever forstriking the-hammer 6263 to.

drive it against one of the type bars 10 to bring the corresponding typeagainst the platen 3 and is provided at its upper end with a bumper head69 for the purpose of engagement with the bumper 67. This lever 68 ispivotallv mounted on a shaft 7 0 and atits upper end is provided with aprojecting arm 71 pivotall connected, as at 7 2, with a metal rod 73 wich forms a core for a solenoid 74. This rod projects normally part wayinto the solenoid to a point, as at 75, where it is then connected witha fiber continuation 7 6 projecting beyond the end of the solenoid 74where it is threaded, as at 77, to receive an adjustment nut 7 8 foradjusting the position of the parts to efficient operations. When thesolenoid 74 is charged with electricity, it attracts the core 73 whichpulls on the arm 71 and operates the lever 68 to cause the bumper head69 to engage the bumper 67 on the type hammer 62-63. This drives thehammer against one of the type bars 10 to carry the type 11 against theplaten 3. The said solenoid 74 is electrified by means of the operationof the keys and connections for throwing the electrically controlledstructure into operation. This embodies primarily the key 17 and thelever 1818. Vhen this lever moves on its fulcrum point 20 and lifts therod 51 upward,

,such rod 51 comes into engagement with a cam 79 on alever 80 fulcrumedat 81, said lever at its other end being provided with a projectingfinger member 82 engageable with a lever 83 fulcrumed, as at 84, upon aswitch plate 85. On the switch plate 85 is turnably mounted an annularcam 86 having a contact point 87 connected therewith.

The numeral 88 designates another con tact point adjacent the point 87but secured stationary to the member 85. Awir 89 leads from a source ofelectrical energy 90 through a make and break switch board 91 from whichswitch board a. wire 92 connects with the point 87. Another wire 93leads from the contact point 88 to the solenoid 74: while still anotherwire 94: leads from the solenoid 7% back to the switch 91 from the point88. When however, the bar 51 is; brought into engagement with the cam 79in the manner specified, this will move the lever 80 on its pivotalpoint 81 and cause the finger member 82 to engage the lever 83 anddisengage the dog 86 from the catch 97. A spring 98 then acts to rotatethe cam 86 and throws the points 87 and 88 together. This completes thecircuit, electrifying the solenoid as follows, from the source ofelectrical energy 90 through the wire 89, switch 91, wire 92, points 87and 88, wire 93, solenoid 74:, wire 94, switch. 91, wire and finallyback to the source of electrical energy 90. The electrifying of thesolenoid 74 causes the same to act on its core 73 to pull the bumperhead 69 against the bumper head 67 with the result that the type bar 10and its corresponding type 11 will be driven against the platen 3. key17, the spring 22 will pull the lever 18-18 back into normal positionwith the result that this will release the bar 51 from engagement withthe cams 52 and 79.; With the release of the cam 52, the spring 61 willact to turn the shaft 54. which, through its connections, will releasethe finger member 59 from engagement with the notch 60 and the spring 34or 35 will then rotate the shaft lite return the type rack back 0 normalposition in which it will be locked by the-en-' When the operatorreleases the v i ward to bring the bumperjhead 69 and 67,

into,engagement, a set screw '100,on a finger.

member'101 at the lower end of the'lever 68,,

engages a lever 102 fulcrumed, as at 103,

connected with 'which is a link 104. This link 104 is connected with thecam- 86 so that with the movementof the lever 102, the said cam 86 willbemoved to return it to normal f position to allow of the engagement "ofthe parts 96 and 97, as aforesai A spring 105 maintains the normalposition of the lever 102-and also aids the spring 98 in its actionofturning the cam 86 when the same is re: leased and ready for action. Asthe lever 83 moves to release the dog 96 from the catch 97, it moves aspring pressed pin 106 into the path ofanother notch 107 on the cam 86.

to limit the movement of such cam so that an exact and fixed contactbetween the points 87 and 88 will be made with each operation and by nopossible chance could the cam 86 be forced so far around as to breaksuch contact.

In order to get the best operation of the solenoid .74 with the leastamount of friction and binding, I have pivotally mounted suchsolenoidxin trunnions 108 with suitable adjustments so that the samewill move slightly each time on such pivotal connections in order toconform to and compensate for the arcodescribed by the lever 68 in itsmovement.

The normal inactive-position of the type hammer 62-453 is maintained bya spring 109 interposed between such hammer and an adjustment screw 110to regulate the tension thereof. v

From the foregoing description it will readily be seen that I haveproduced such a deviceas substantially fulfils the objects of theinvention asset forth herein. a

lVhile this specification sets forth in detail the present and preferredconstruction of the device, still in practice, such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention.

Having thus described my invention, what I claim as new'and useful, is

. .1. A device of the character described comprisingthe combination witha type rack and type bars, of a'means for striking'such type bars, suchmeans comprising a pivoted hammer capable of engaging said type bars,

a lever .fulcrumed independently of said Copies of fi s patent maybe'obtalned to l solenoid pivotelly'mounted, the coreof said solenoidbeing fienibly connected with sa d lever and 'means" for electrifyingsaid islflilhid to cause: itto operate to pull said file-Ye! intoengagement h Said hammer, as described? I iZJA device of the characterdescribed coinprising-the combinatioga with a type rack and type bars,of a means for'strilnng such hammer capable of'engaging said type bars,j a lever fulcrumed independently of said and v adapted to engage thesame, a i

typebars, such means comprising a pivoted h mmer and adapted to engagethe same, a

so enoid 'pivotally mounted, the. core of said solenoid being flexiblyconnected with said lever and means for electrifying said "lever intoengagement with said hammer,

.. solenoid to cause it to operate to pull said such means comprising a'pivoted key, a

switch board, afixed ."c'ontact point and a movable contact point-Lonsuch switch board,-

means operable between said key andsaid movable contact point to movesaid movable contact point into engagement with said a source ofelectrical energy, and wired connectlons from said source of electricalenergy to sald contact points and from saidcontact points to saidsolenoid to complete an electrical circuit throughthe solenoid when saidcontact points move together, as described.

3. A device of the character described comprising the combination with arotary type rack carrying type bars and type, of a key for turning saidtype rack, a lever on said-hey, means operable between saidlever fixedcontact point when said key is moved,

finger member on said shaft adapted to. en-

' gage said cam with the movement of said lever, the amount of suchmovement being limited by said set screw, such turnable shaft beingoperatively connected with said type rack whereby, witl the movement ofsaid turnable shaft, said type rack will turn, as

described. In testimony whereof I afiix my signature in presence of twowltnessea.

, onnv BENNETT.

,Witnesses:

FLoYp M. BLANOHARD, STEPHEN N. Bnnwn'r'r.

r five cents each, by addressing the. fiommissioner of Patents- 1Washington- 3. C.

